[PATCH 5.4 064/123] netfilter: nf_conntrack: ct_cpu_seq_next should increase position index

From: Greg Kroah-Hartman
Date: Tue Mar 17 2020 - 07:19:36 EST


From: Vasily Averin <vvs@xxxxxxxxxxxxx>

commit dc15af8e9dbd039ebb06336597d2c491ef46ab74 upstream.

If .next function does not change position index,
following .show function will repeat output related
to current position index.

Cc: stable@xxxxxxxxxxxxxxx
Fixes: 1f4aace60b0e ("fs/seq_file.c: simplify seq_file iteration code ...")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=206283
Signed-off-by: Vasily Averin <vvs@xxxxxxxxxxxxx>
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
net/netfilter/nf_conntrack_standalone.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/netfilter/nf_conntrack_standalone.c
+++ b/net/netfilter/nf_conntrack_standalone.c
@@ -411,7 +411,7 @@ static void *ct_cpu_seq_next(struct seq_
*pos = cpu + 1;
return per_cpu_ptr(net->ct.stat, cpu);
}
-
+ (*pos)++;
return NULL;
}